Function solana_libra_nextgen_crypto::ed25519::compat::generate_keypair

pub fn generate_keypair<'a, T>(
    opt_rng: T
) -> (Ed25519PrivateKey, Ed25519PublicKey) where
    T: Into<Option<&'a mut StdRng>> + Sized, 

Generate an arbitrary key pair, with possible Rng input